Garmin POI limitations

Leszek Pawlowicz found
that the POI data displayed by garmin devices are not limited by a certain number of characters,
but rather by screen space, which makes a difference because of the proportianal font used by the garmin
handheld devices.

The garmin can show 2 lines of text for the name of a POI, and 4 lines of text for the description.

If the text in a line exceeds the displayable length,
then the garmin will wrap that line,
provided there is room for another line.
Whether or not a hyphen is inserted seems to depend on the following factors:

Hyphens are only inserted after or between letters of the roman alphabet (as catogorized by the device)

No hyphen is inserted if more than one character would have to be moved to the next line to make room for the hyphen (a minus sign)

An explicit line break in the name or the description is honored by the device.

A test revealed that the following numbers of repeats of a single iso-8859-1 character fits into one line on the POI display page: